The production process of the new dry cement production process is generally summarized as two grinding and one burning, which is divided into three stages: after grinding limestone raw materials, clay raw materials and a small amount of materials Graded raw materials are ground, they are mixed, ground and mixed in a certain proportion. Raw flour with suitable composition and uniform quality is called preparation of raw flour in cement kiln until partially melted to obtain Portland cement clinker with calcium silicate; the main component is called clinker. Calcination; adding appropriate quantity of gypsum, mixed materials or additives to clinker and grinding them into cement is called cement grinding.
Equipment commonly used in each cement factory workshop:
Raw workshop: limestone crusher (hammer crusher, concjaw lifter, etc.), stacker and recoverer for the pre-homogenization of limestone, raw flour mill.
Cooking workshop: coal pre-homogenization equipment, coal grinder, preheater, rotary kiln, cooler, high temperature fan, circulating fan, etc.
Cement workshop: cement mixing, roller press, cement grinder, packaging machine, bulk machine, etc.
Production of residual thermal energy: steam turbine, generator, etc.
There are also various motors, actuators, metering belt scales, rotor scales, belt conveyors, fans and water circulation systems in the factory.
After more than ten years of development, China's cement kiln waste thermal energy generation technology has made great progress and is now approaching the international advanced level. A variety of energy production systems have emerged andcan meet the requirements of different types of ovens. In the long term, the development trend of China's cement kiln waste thermal energy generation technology will mainly focus on the following aspects: